US8490826B2 - Transport and storage containers for liquids - Google Patents

Transport and storage containers for liquids Download PDF

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Publication number
US8490826B2
US8490826B2 US11/506,599 US50659906A US8490826B2 US 8490826 B2 US8490826 B2 US 8490826B2 US 50659906 A US50659906 A US 50659906A US 8490826 B2 US8490826 B2 US 8490826B2
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Prior art keywords
grate
casing
clinch
vertical
rods
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US11/506,599
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US20070039955A1 (en
Inventor
Udo Schütz
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Protechna SA
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Protechna SA
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Assigned to PROTECHNA S.A. reassignment PROTECHNA S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHUTZ, UDO
Publication of US20070039955A1 publication Critical patent/US20070039955A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/0446—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section not formed by folding or erecting one or more blanks
    • B65D77/0453—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section not formed by folding or erecting one or more blanks the inner container having a polygonal cross-section
    • B65D77/0466—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section not formed by folding or erecting one or more blanks the inner container having a polygonal cross-section the containers being mounted on a pallet

Definitions

  • the present invention relates to a transport and storage container for liquids.
  • the container includes a palette-like bottom frame for an exchangeable inner container of synthetic material which has four side walls, a bottom wall and an upper wall, a closable filling connection integrally formed with the upper wall and a discharge connection with a discharge fitting integrally formed at a lower portion of a side wall, and with a grate casing with horizontal and vertical grate rods of metal for receiving the inner container, wherein the ends of the vertical grate rods are welded to a lower and upper circumferential horizontal border profile.
  • the primary object of the present invention to provide a grate casing of the transport and storage container of the above-described type for liquids which is improved in order to achieve an increased stacking and transporting security of the container.
  • the flatly pressed upper ends of the vertical grate rods of the grate casing are connected by a frictionally and positively engaging connection to a circumferential web which is integrally formed with the upper edge profile of the grate casing by means of dot welded connections and clinch connections of the ends of the vertical grate rods with the upper border profile of the grate casing, wherein, when due to a failure of the dot welded connection of a grate rod connection at the upper border profile fails due to a static and/or dynamic force, the fastening of the grate rods is effected by the clinch connection, and, when the clinch connection of a grate rod connection at the upper border profile fails, the grate rod attachment is effected by the dot welded connections.
  • the multiple, particularly triple, dot welding in combination with a clinch connection of the upper and possibly the lower flatly pressed ends of the vertical grate rods to a circumferential border profile of the grate casing of the transport and storage container ensure an optimum stacking and transportation safety of the container which, in comparison to the static and dynamic loads, achieves a resistant and frictionally and positively engaging connection of the upper and possibly the lower ends of the vertical grate rods to the circumferential upper and lower edge profiles of the grate casing of the container.
  • FIG. 1 is a perspective view of a transport and storage container
  • FIG. 2 is a perspective illustration, on a larger scale, of the fastening of the upper end of a vertical grate rod of the grate casing of the container of FIG. 1 to the upper edge profile of the grate casing;
  • FIG. 3 is a sectional view taken along Sectional line III-III of FIG. 2 of a first embodiment of the attachment of a vertical grate rod to the edge profile;
  • FIG. 4 is a sectional view, corresponding to FIG. 3 , showing a second embodiment of the attachment of a vertical grate rod to the border profile.
  • the transport and storage container 1 for liquids shown in FIG. 1 which can be used as a disposable or reusable container, has as its principal components an exchangeable, parallelepiped-shaped inner container 2 of synthetic material having four side walls 3 to 6 , a front wall 7 and an upper wall 8 , a filling connection 9 which can be closed with a cover 10 and a discharge connection 12 integrally formed at a lower portion of the front wall 3 .
  • the container includes an outer grate casing 13 of intersecting horizontal and vertical grate rods 14 , 15 of metal for receiving the inner container 2 , wherein the ends 16 , 17 of the vertical grate rods 15 are welded to an upper and a lower circumferential, horizontal border profile 18 , 19 of the grate casing 13 , respectively, and a palette-like bottom frame 20 with length and width dimensions which meet European standards.
  • the lower bottom 7 of the inner container 2 constructed as a discharge bottom is constructed with a central discharge groove 21 which descends from the container rear wall 5 to the discharge connection 11 in the front wall 3 of the container, and the inner container 2 is stands with the lower bottom 7 on the correspondingly constructed bottom 22 of the bottom frame 20 .
  • the bottom 22 of the bottom frame 20 of the transport and storage container 1 which is used for handling by means of a forklift, a shelf operating system or similar transporting means, rests on four corner legs 23 to 26 , a rear center leg 27 , a front center leg 28 formed with the bottom 22 , and the center leg 28 is arranged above the discharge fitting 12 of the transport container 1 , as well as two lateral center legs 29 , 30 which are formed by the outer ends of a bridge-like stiffening sheet 31 for the bottom 22 .
  • the flatly pressed upper ends 16 of the vertical tubular grate rods 15 of the grate casing 13 which have double the material thickness of the sheet of the grate rods, are connected in a positively engaging and frictionally engaging manner with a triple dot welding 32 and a clinch connection 33 a to a circumferential web 34 which is integrally formed with the upper tubular border profile 18 of the grate casing 13 , wherein the web 34 has double the material thickness of the border profile.
  • a tool consisting of top and bottom dies is used for making two parallel incisions 35 , 36 each in the web 34 of the upper border profile 18 and in the flat upper end 16 of a vertical grate rod 15 which rests against the web for forming two narrow strips 37 , 38 which are connected with their ends to the web 34 and the flat rod end 16 , respectively, and are formed by penetration joining into a push-button like clinch element 39 .
  • Clinch element 39 formed by penetration joining of the clinch connection 33 b in accordance with FIG. 4 for fastening the upper flatly pressed end 16 of a vertical grate rod 15 to the web 34 of the upper border profile 15 of the grate casing 13 is hump-shaped.
  • the local transforming process creates inseparable clinch elements which have a high holding force. Especially under dynamic loads, it has been found that such clinch elements have a significantly better support behavior than the resistance weld dots because clinch elements reach their endurance strength at higher force amplitudes.
  • the two-fold fastening by a frictionally engaging and positively engaging connection of the vertical grate rods with the upper circumferential border profile of the grate casing of the transport and storage container of the type described above for liquids by means of dot welding connections and a clinch connection meets the required safety function which is based on ensuring the fastening of the vertical grate rods to the upper border profile of the grate casing by means of the clinch connection if the welded connections fail, and the fastening of the grate rods to the upper border profile of the grate casing is ensured by the dot welded connections if the clinch connection fails.
  • the vertical grate rods 15 can also be fastened with their lower ends 17 by dot welding and clinching to the lower border profile 19 of the grate casing 13 .

Abstract

A transport and storage container for liquids has as principal components a palette-like bottom frame for an exchangeable inner container of synthetic material and a grate casing with horizontal and vertical grate rods of metal for receiving the inner container. The vertical grate rods connected with their upper ends to the upper border profile of the grate casing by dot welding and clinching. As a result of the two-fold connection by positive and frictional engagement of the vertical grate rods to the upper circumferential border profile of the grate casing ensures that, when the dot welded connections fail, the fastening of the vertical grate rods to the upper border profile of the grate casing is ensured by the clinch connection and, when the clinch connection fails, the fastening of the grate rods to the upper border profile of the grate casing is ensured by the dot welded connections.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a transport and storage container for liquids. The container includes a palette-like bottom frame for an exchangeable inner container of synthetic material which has four side walls, a bottom wall and an upper wall, a closable filling connection integrally formed with the upper wall and a discharge connection with a discharge fitting integrally formed at a lower portion of a side wall, and with a grate casing with horizontal and vertical grate rods of metal for receiving the inner container, wherein the ends of the vertical grate rods are welded to a lower and upper circumferential horizontal border profile.
2. Description of the Related Art
When a transport and storage container of the above described type for liquids known from DE 10 2004 058 985 A1 stacked on a lower container of a stack of containers slides during stacking or during transport, there is the danger that the upper container which has the corner and middle legs of the palette-like lower frame will slide inwardly from the upper edge profile of the grate casing constructed as a hollow profile of the lower container. This has the result that the upper area of the grate casing of the lower container is expanded under the weight of the upper container which is filled with a liquid, so that the screw connections of the cover struts extending diagonally over the upper wall of the synthetic inner container with the upper edge profile are separated and the inner container as well as the welded connections of the upper ends of the vertical grate rods with the upper edge profile of the grate casing are damaged.
In addition, there is the possibility that, due to static bending stresses because of stacking loads during stacking of several containers and bending surge loads during transportation due to surge vibrations which emanate from the liquid material in the synthetic inner container and are transmitted through the flexible casing of the inner container to the grate casing, and due to drive vibrations transmitted by the transport vehicle and an impact load, for example, due to dropping of the palette container from a certain height, the welded connections of the vertical grate rods with the upper border profile of the grate casing fail and the border profile is partially or completely separated from the vertical grate rods of the grate casing and, thus, transportation damage occurs at the containers.
SUMMARY OF THE INVENTION
Therefore, is the primary object of the present invention to provide a grate casing of the transport and storage container of the above-described type for liquids which is improved in order to achieve an increased stacking and transporting security of the container.
In accordance with the present invention, the flatly pressed upper ends of the vertical grate rods of the grate casing are connected by a frictionally and positively engaging connection to a circumferential web which is integrally formed with the upper edge profile of the grate casing by means of dot welded connections and clinch connections of the ends of the vertical grate rods with the upper border profile of the grate casing, wherein, when due to a failure of the dot welded connection of a grate rod connection at the upper border profile fails due to a static and/or dynamic force, the fastening of the grate rods is effected by the clinch connection, and, when the clinch connection of a grate rod connection at the upper border profile fails, the grate rod attachment is effected by the dot welded connections.
The multiple, particularly triple, dot welding in combination with a clinch connection of the upper and possibly the lower flatly pressed ends of the vertical grate rods to a circumferential border profile of the grate casing of the transport and storage container according to the present invention ensure an optimum stacking and transportation safety of the container which, in comparison to the static and dynamic loads, achieves a resistant and frictionally and positively engaging connection of the upper and possibly the lower ends of the vertical grate rods to the circumferential upper and lower edge profiles of the grate casing of the container.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of the disclosure. For a better understanding of the invention, its operating advantages, specific objects attained by its use, reference should be had to the drawing and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWING
In the drawing:
FIG. 1 is a perspective view of a transport and storage container;
FIG. 2 is a perspective illustration, on a larger scale, of the fastening of the upper end of a vertical grate rod of the grate casing of the container of FIG. 1 to the upper edge profile of the grate casing;
FIG. 3 is a sectional view taken along Sectional line III-III of FIG. 2 of a first embodiment of the attachment of a vertical grate rod to the edge profile; and
FIG. 4 is a sectional view, corresponding to FIG. 3, showing a second embodiment of the attachment of a vertical grate rod to the border profile.
 DETAILED DESCRIPTION OF THE INVENTION
The transport and storage container 1 for liquids shown in FIG. 1, which can be used as a disposable or reusable container, has as its principal components an exchangeable, parallelepiped-shaped inner container 2 of synthetic material having four side walls 3 to 6, a front wall 7 and an upper wall 8, a filling connection 9 which can be closed with a cover 10 and a discharge connection 12 integrally formed at a lower portion of the front wall 3. In addition, the container includes an outer grate casing 13 of intersecting horizontal and vertical grate rods 14, 15 of metal for receiving the inner container 2, wherein the ends 16, 17 of the vertical grate rods 15 are welded to an upper and a lower circumferential, horizontal border profile 18, 19 of the grate casing 13, respectively, and a palette-like bottom frame 20 with length and width dimensions which meet European standards.
The lower bottom 7 of the inner container 2 constructed as a discharge bottom is constructed with a central discharge groove 21 which descends from the container rear wall 5 to the discharge connection 11 in the front wall 3 of the container, and the inner container 2 is stands with the lower bottom 7 on the correspondingly constructed bottom 22 of the bottom frame 20.
The bottom 22 of the bottom frame 20 of the transport and storage container 1, which is used for handling by means of a forklift, a shelf operating system or similar transporting means, rests on four corner legs 23 to 26, a rear center leg 27, a front center leg 28 formed with the bottom 22, and the center leg 28 is arranged above the discharge fitting 12 of the transport container 1, as well as two lateral center legs 29, 30 which are formed by the outer ends of a bridge-like stiffening sheet 31 for the bottom 22.
The flatly pressed upper ends 16 of the vertical tubular grate rods 15 of the grate casing 13, which have double the material thickness of the sheet of the grate rods, are connected in a positively engaging and frictionally engaging manner with a triple dot welding 32 and a clinch connection 33 a to a circumferential web 34 which is integrally formed with the upper tubular border profile 18 of the grate casing 13, wherein the web 34 has double the material thickness of the border profile.
For manufacturing the clinch connections 33 a according to FIGS. 2 and 3, a tool consisting of top and bottom dies is used for making two parallel incisions 35, 36 each in the web 34 of the upper border profile 18 and in the flat upper end 16 of a vertical grate rod 15 which rests against the web for forming two narrow strips 37, 38 which are connected with their ends to the web 34 and the flat rod end 16, respectively, and are formed by penetration joining into a push-button like clinch element 39.
Clinch element 39 formed by penetration joining of the clinch connection 33 b in accordance with FIG. 4 for fastening the upper flatly pressed end 16 of a vertical grate rod 15 to the web 34 of the upper border profile 15 of the grate casing 13 is hump-shaped.
The local transforming process creates inseparable clinch elements which have a high holding force. Especially under dynamic loads, it has been found that such clinch elements have a significantly better support behavior than the resistance weld dots because clinch elements reach their endurance strength at higher force amplitudes.
The two-fold fastening by a frictionally engaging and positively engaging connection of the vertical grate rods with the upper circumferential border profile of the grate casing of the transport and storage container of the type described above for liquids by means of dot welding connections and a clinch connection meets the required safety function which is based on ensuring the fastening of the vertical grate rods to the upper border profile of the grate casing by means of the clinch connection if the welded connections fail, and the fastening of the grate rods to the upper border profile of the grate casing is ensured by the dot welded connections if the clinch connection fails.
Deviating from the described embodiment, the vertical grate rods 15 can also be fastened with their lower ends 17 by dot welding and clinching to the lower border profile 19 of the grate casing 13.
While specific embodiments of the invention have been shown and described in detail to illustrate the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles.

Claims (3)

I claim:
1. A transport and storage container for liquids, the container comprising a palette-like bottom frame for an exchangeable inner container of synthetic material having four side walls, a bottom wall and an upper wall, a closeable filling connection integrally formed with the upper wall, a discharge connection with a discharge fitting integrally formed at a lower portion of the sidewalls, and a grate casing with horizontal and vertical grate rods of metal receiving the inner container, wherein ends of the vertical grate rods are welded to lower and upper circumferential horizontal border profiles, further comprising a frictionally engaging and a positively engaging fastening of flatly closed upper ends of the vertical grate rods of the grate casing to a circumferential web integrally formed with the upper border profile of the grate casing by both dot welded connections and clinch connections, the dot welded connections and the clinch connections being formed at different connecting sites so that the dot welded connections are formed at a different location than the clinch connections, the clinch connections connecting the ends of the vertical grate rods with the upper border profile of the grate casing, wherein, two incisions are provided in the web of the border profile and in the flat upper end of a vertical grate rod of the grate casing which rests against the web for forming two narrow strips, wherein ends of the narrow strips are connected to one of the web and the flat rod end, and wherein the strips are formed by penetration or penetration joining into a clinch element, so that if the dot welded connections of a grate rod to the upper border profile fails under static and/or dynamic load applications, the grate rod connection is effected by the clinch connection, and, if the clinch connection of the grate rod to the upper border profile fails, the grate rod connection is effected by the dot welded connections.
2. The container according to claim 1, wherein flatly compressed lower ends of the vertical grate rods of the grate casing are connected to a circumferential web integrally formed to the lower border profiled of the grate casing by dot welded connections and clinch connections.
3. The container according to claim 1, comprising a triple dot welding of the vertical grate rods to the web of the border profiles of the grate casing.
US11/506,599 2005-08-20 2006-08-18 Transport and storage containers for liquids Active 2028-05-25 US8490826B2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE102005039409.4 2005-08-20
DE102005039409 2005-08-20
DE102005039409 2005-08-20
DE102006031940A DE102006031940A1 (en) 2005-08-20 2006-07-11 Transport and storage container for liquids
DE102006031940.0 2006-07-11
DE102006031940 2006-07-11

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US20070039955A1 US20070039955A1 (en) 2007-02-22
US8490826B2 true US8490826B2 (en) 2013-07-23

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US (1) US8490826B2 (en)
EP (1) EP1754670B1 (en)
JP (1) JP4423279B2 (en)
CN (1) CN100448760C (en)
AR (1) AR056038A1 (en)
AT (1) ATE529351T1 (en)
AU (1) AU2006203571C1 (en)
BR (1) BRPI0603377A (en)
DE (1) DE102006031940A1 (en)
ES (1) ES2375634T3 (en)
MX (1) MXPA06009418A (en)
MY (1) MY146731A (en)
NO (1) NO335024B1 (en)
RU (1) RU2352506C2 (en)
ZA (1) ZA200606628B (en)

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US20090114655A1 (en) * 2006-04-28 2009-05-07 Bluescope Steel Limited Water storage tank
DE102010040270A1 (en) * 2010-09-06 2012-03-08 Protechna S.A. Transport and storage container for liquids
DE102010048609B4 (en) * 2010-10-15 2013-06-27 Ekkehard Schneider Container arrangement with stiffening element
CN102060150A (en) * 2010-12-06 2011-05-18 无锡四方友信股份有限公司 Section tube for ton packaging
CN102050288A (en) * 2010-12-06 2011-05-11 无锡四方友信股份有限公司 Frame for ton packaging
WO2012085940A2 (en) * 2010-12-24 2012-06-28 Genex Science And Technologies Pvt. Ltd. Pallet container with riveted cage
WO2012085938A1 (en) * 2010-12-24 2012-06-28 Genex Science And Technologies Pvt. Ltd. Pallet container with improved top lifting performance
DE102011007583B4 (en) * 2011-04-18 2015-07-09 Protechna S.A. Pallet-type base for transport and storage containers for liquids
DE202012001726U1 (en) * 2012-02-20 2012-06-14 Dietmar Przytulla pallet container
IT201700095075A1 (en) * 2017-08-22 2019-02-22 Maschio N S S R L METALLIC CAGE FOR TANKS.

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EP0633200A1 (en) 1993-07-06 1995-01-11 Protechna S.A. Pallet container and method of making it
US5408735A (en) * 1991-09-23 1995-04-25 Schleicher; Louis C. Method for forming a clinch joint
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US20050161965A1 (en) * 2004-01-27 2005-07-28 Wolfgang Eberlein Method for connecting two or more metal sheets or profile parts, especially of an automobile body segment, and said automobile body segment description

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Publication number Priority date Publication date Assignee Title
US4909387A (en) 1988-11-24 1990-03-20 Schuetz Udo Pallet container with an exchangeable inner container of a synthetic resin and an outer jacket of metal lattice bars
US5408735A (en) * 1991-09-23 1995-04-25 Schleicher; Louis C. Method for forming a clinch joint
EP0633200A1 (en) 1993-07-06 1995-01-11 Protechna S.A. Pallet container and method of making it
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DE4425630C2 (en) 1994-04-15 1996-09-05 Protechna Sa Transport and storage containers for liquids
US5645185A (en) * 1995-07-25 1997-07-08 Futisplast S.P.A. Crate for pallets
US20020008108A1 (en) * 1999-12-23 2002-01-24 Van Giezen Maurice Gerardus Maria Pallet container with grid support structure
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US20050161965A1 (en) * 2004-01-27 2005-07-28 Wolfgang Eberlein Method for connecting two or more metal sheets or profile parts, especially of an automobile body segment, and said automobile body segment description

Also Published As

Publication number Publication date
EP1754670B1 (en) 2011-10-19
BRPI0603377A (en) 2007-04-10
JP4423279B2 (en) 2010-03-03
RU2006129948A (en) 2008-02-27
DE102006031940A1 (en) 2007-03-01
ATE529351T1 (en) 2011-11-15
ZA200606628B (en) 2007-12-27
EP1754670A2 (en) 2007-02-21
MY146731A (en) 2012-09-14
NO335024B1 (en) 2014-08-25
AU2006203571C1 (en) 2008-12-11
AU2006203571B2 (en) 2008-07-17
JP2007055688A (en) 2007-03-08
NO20063717L (en) 2007-02-21
CN100448760C (en) 2009-01-07
CN1915764A (en) 2007-02-21
EP1754670A3 (en) 2007-11-21
ES2375634T3 (en) 2012-03-02
AU2006203571A1 (en) 2007-03-08
RU2352506C2 (en) 2009-04-20
AR056038A1 (en) 2007-09-12
US20070039955A1 (en) 2007-02-22
MXPA06009418A (en) 2007-03-23

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